用“loopback test”造句大全，loopback test造句

To perform a DS1 loopback test

The fit loopback tests the cable by looping the signal back after it reaches the DTE port.

This device is currently in use by another application. Close that application before attempting to run the loopback test.

The data loopback test disrupts normal network communication. Normal communication will resume when test is complete. Do you want to continue?